Update to High Sierra on MacBook Pro Mid 2010 not working.
I am trying to update from El Capitan to High Sierra on my MacBook Pro Mid 2010. However, anytime I try to open High Sierra in the Appstore there is a message that the application is damaged and can´t be used to install macOS.
Have you any recommendations where to get a functional and safe copy of macOS High Sierra?
MacBook Pro 13″, OS X 10.11